Product advantages: 1, high degree of automation, tunnel section adaptability, simple operation; 2, the design of the construction platform, can be used as a tunnel repair truck, convenient and fast;3, the high-pressure spray curing system is sprayed as a water mist, which can achieve the function of uniform and appropriate multiple spraying, which can effectively prevent water from flowing along the concrete, and the water mist spraying not only saves water resources, but also makes the second lining concrete can continue to keep wet and fully cured.